登録情報 データベース : EMDB / ID : EMD-25647 構造の表示 ダウンロードとリンクタイトル Structure of electron bifurcating Ni-Fe hydrogenase complex HydABCSL in FMN/NAD(H) bound state マップデータElectron bifurcating Ni-Fe hydrogenase complex HydABCSL in FMN/NAD(H) bound state 詳細 試料複合体 : NiFe hydrogenase complex ABCSLリガンド : x 6種 詳細 キーワード hydrogenase complex / electron bifurcation / OXIDOREDUCTASE機能・相同性 機能・相同性情報分子機能 ドメイン・相同性 構成要素
ferredoxin hydrogenase activity / iron-sulfur cluster binding / nickel cation binding / NADH dehydrogenase activity / NADH dehydrogenase (ubiquinone) activity / quinone binding / ATP synthesis coupled electron transport / 2 iron, 2 sulfur cluster binding / FMN binding / 4 iron, 4 sulfur cluster binding ... ferredoxin hydrogenase activity / iron-sulfur cluster binding / nickel cation binding / NADH dehydrogenase activity / NADH dehydrogenase (ubiquinone) activity / quinone binding / ATP synthesis coupled electron transport / 2 iron, 2 sulfur cluster binding / FMN binding / 4 iron, 4 sulfur cluster binding / oxidoreductase activity / metal ion binding / membrane 類似検索 - 分子機能 : / NADP-reducing hydrogenase subunit HndA / Soluble ligand binding domain / SLBB domain / [NiFe]-hydrogenase, small subunit, N-terminal domain superfamily / Molybdopterin oxidoreductase Fe4S4 domain / Molybdopterin oxidoreductase Fe4S4 domain / 4Fe-4S binding domain / Nickel-dependent hydrogenases large subunit signature 2. / Nickel-dependent hydrogenases large subunit signature 1. ... : / NADP-reducing hydrogenase subunit HndA / Soluble ligand binding domain / SLBB domain / [NiFe]-hydrogenase, small subunit, N-terminal domain superfamily / Molybdopterin oxidoreductase Fe4S4 domain / Molybdopterin oxidoreductase Fe4S4 domain / 4Fe-4S binding domain / Nickel-dependent hydrogenases large subunit signature 2. / Nickel-dependent hydrogenases large subunit signature 1. / Nickel-dependent hydrogenase, large subunit, nickel binding site / Nickel-dependent hydrogenase, large subunit / Nickel-dependent hydrogenase / : / NADH-quinone oxidoreductase subunit 3, ferredoxin-like domain / : / Respiratory-chain NADH dehydrogenase 75 Kd subunit signature 1. / NADH:ubiquinone oxidoreductase, 75kDa subunit, conserved site / NADH-ubiquinone oxidoreductase-G iron-sulfur binding region / NADH-ubiquinone oxidoreductase-G iron-sulfur binding region / 2Fe-2S iron-sulfur cluster binding domain / Respiratory-chain NADH dehydrogenase 24 Kd subunit signature. / NuoE domain / NADH:ubiquinone oxidoreductase, subunit G, iron-sulphur binding / His(Cys)3-ligated-type [4Fe-4S] domain profile. / NADH-quinone oxidoreductase subunit E-like / NADH:ubiquinone oxidoreductase, 51kDa subunit, conserved site / Respiratory-chain NADH dehydrogenase 51 Kd subunit signature 2. / NADH-quinone oxidoreductase subunit E, N-terminal / NADH-ubiquinone oxidoreductase 51kDa subunit, iron-sulphur binding domain / NADH-ubiquinone oxidoreductase 51kDa subunit, iron-sulphur binding domain superfamily / NADH-ubiquinone oxidoreductase-F iron-sulfur binding region / NADH-ubiquinone oxidoreductase-F iron-sulfur binding region / Thioredoxin-like [2Fe-2S] ferredoxin / NADH-ubiquinone oxidoreductase 51kDa subunit, FMN-binding domain / NADH-ubiquinone oxidoreductase 51kDa subunit, FMN-binding domain superfamily / Nuo51 FMN-binding domain / Molybdopterin oxidoreductase, 4Fe-4S domain / Prokaryotic molybdopterin oxidoreductases 4Fe-4S domain profile. / NADH:ubiquinone oxidoreductase-like, 20kDa subunit / NADH ubiquinone oxidoreductase, 20 Kd subunit / Molybdopterin oxidoreductase / Molybdopterin oxidoreductase / [NiFe]-hydrogenase, large subunit / 2Fe-2S ferredoxin-type iron-sulfur binding domain profile. / 2Fe-2S ferredoxin-type iron-sulfur binding domain / 2Fe-2S ferredoxin-like superfamily / 4Fe-4S ferredoxin, iron-sulphur binding, conserved site / 4Fe-4S ferredoxin-type iron-sulfur binding region signature. / 4Fe-4S ferredoxin-type iron-sulfur binding domain profile. / 4Fe-4S ferredoxin-type, iron-sulphur binding domain / Thioredoxin-like superfamily 類似検索 - ドメイン・相同性 Coenzyme F420-reducing hydrogenase, alpha subunit / Coenzyme F420-reducing hydrogenase, gamma subunit / Putative anaerobic dehydrogenase / NADH:ubiquinone oxidoreductase, NADH-binding (51 kD) subunit / NADH-quinone oxidoreductase, E subunit 類似検索 - 構成要素生物種 Acetomicrobium mobile (バクテリア)手法 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度 : 3.0 Å 詳細 データ登録者Feng X / Li H 資金援助 米国, 2件 詳細 詳細を隠すOrganization Grant number 国 Department of Energy (DOE, United States) DE-SC0020085 米国 Department of Energy (DOE, United States) DE-FG02-95ER20175 米国
引用ジャーナル : Sci Adv / 年 : 2022タイトル : Structure and electron transfer pathways of an electron-bifurcating NiFe-hydrogenase.著者 : Xiang Feng / Gerrit J Schut / Dominik K Haja / Michael W W Adams / Huilin Li / 要旨 : Electron bifurcation enables thermodynamically unfavorable biochemical reactions. Four groups of bifurcating flavoenzyme are known and three use FAD to bifurcate. FeFe-HydABC hydrogenase represents ... Electron bifurcation enables thermodynamically unfavorable biochemical reactions. Four groups of bifurcating flavoenzyme are known and three use FAD to bifurcate. FeFe-HydABC hydrogenase represents the fourth group, but its bifurcation site is unknown. We report cryo-EM structures of the related NiFe-HydABCSL hydrogenase that reversibly oxidizes H and couples endergonic reduction of ferredoxin with exergonic reduction of NAD. FMN surrounded by a unique arrangement of iron sulfur clusters forms the bifurcating center. NAD binds to FMN in HydB, and electrons from H via HydA to a HydB [4Fe-4S] cluster enable the FMN to reduce NAD. Low-potential electron transfer from FMN to the HydC [2Fe-2S] cluster and subsequent reduction of a uniquely penta-coordinated HydB [2Fe-2S] cluster require conformational changes, leading to ferredoxin binding and reduction by a [4Fe-4S] cluster in HydB. This work clarifies the electron transfer pathways for a large group of hydrogenases underlying many essential functions in anaerobic microorganisms. 履歴 登録 2021年12月6日 - ヘッダ(付随情報) 公開 2022年3月16日 - マップ公開 2022年3月16日 - 更新 2024年12月25日 - 現状 2024年12月25日 処理サイト : RCSB / 状態 : 公開
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